1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)inet_ntoa.c 5.4 (Berkeley) 06/27/88"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 /* 23 * Convert network-format internet address 24 * to base 256 d.d.d.d representation. 25 */ 26 #include <sys/types.h> 27 #include <netinet/in.h> 28 29 char * 30 inet_ntoa(in) 31 struct in_addr in; 32 { 33 static char b[18]; 34 register char *p; 35 36 p = (char *)∈ 37 #define UC(b) (((int)b)&0xff) 38 sprintf(b, "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3])); 39 return (b); 40 } 41